In 1808, aluminum oxide was electrolyzed in the laboratory and became aluminum. In 1884, it was used as a building material on the top of Washington Monument; The aluminum alloy materials synthesized by adding various metal elements to aluminum have been widely used in various links in the construction industry. The thickness of common aluminum alloy plates: generally 0.8-1.2mm for advanced metal roof (and curtain wall) systems (while it is generally ≥ 2.5mm for traditional systems)

Aluminum coils are widely used in electronics, packaging, construction, machinery, etc. There are many aluminum coil manufacturers in China, and the production process has caught up with that of developed countries. According to the different metal elements contained in aluminum coils, aluminum coils can be roughly divided into nine categories.